Re: How to Enable Automatic Recalculation
- To: mathgroup at smc.vnet.net
- Subject: [mg109845] Re: How to Enable Automatic Recalculation
- From: Patrick Scheibe <pscheibe at trm.uni-leipzig.de>
- Date: Wed, 19 May 2010 20:14:19 -0400 (EDT)
Hi, try to use := for b:=3+a. It doesn't evaluates the right-hand side at time of assignment but everytime you use (evaluate) "b". Cheers Patrick Am May 19, 2010 um 1:01 PM schrieb Victor Roberts: > I'm new to Mathematica, so perhaps there is a simple answer > to this question. > > How to I set Mathematica so that when I change the value > assigned to a variable it will automatically change all > later calculations that use that variable. > > For example, if I set > > a = 5 > > and > > b = 3 + a > > I would like the value of b updated each time I change the > value of a. > > Right how, I need to recalculate each and every expression > that uses the variable a if I change its value. There must > be a better way. > > > -- > Vic Roberts > Replace xxx with vdr in e-mail address. >